[gradsusr] gradsusr Digest, Vol 27, Issue 9

Ashok Priyadarshan Dimri apdimri at yahoo.com
Tue May 8 02:39:50 EDT 2012


Dear Ben-Jei Tsuang and Arlindo da Silva,
With reference to my previous mail to compute and plot rotational and divergent wind - I came across libbjt.gex - Ben-Jei Tsuang's Collection of GrADS v1.9 Extensions

in openGrADs. 

Where can I download this? Could you or anyone else help in this?
Thanks in advance.
Sincerely
Dimri



________________________________
 From: "gradsusr-request at gradsusr.org" <gradsusr-request at gradsusr.org>
To: gradsusr at gradsusr.org 
Sent: Tuesday, May 8, 2012 1:51 PM
Subject: gradsusr Digest, Vol 27, Issue 9
 
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Today's Topics:

   1. Re: Grads vertical derivative error with cdiff (Arlindo da Silva)
   2. Re: gradsusr Digest, Vol 27, Issue 8 (Ashok Priyadarshan Dimri)


----------------------------------------------------------------------

Message: 1
Date: Tue, 8 May 2012 00:25:39 -0400
From: Arlindo da Silva <dasilva at alum.mit.edu>
Subject: Re: [gradsusr] Grads vertical derivative error with cdiff
To: GrADS Users Forum <gradsusr at gradsusr.org>
Message-ID:
    <CALz7xZfX03yqyTP_DmRLZQadCMTzXMMj-KPsJ+4JdmRqcW6qLA at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

On Sun, May 6, 2012 at 9:44 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:

> You can't use cdiff in the vertical.  You must calculate the derivative
> using a manual centered difference.  For example, 'd
> 0.5*(geopot(z+1)-geopot(z-1))'
>
>
If you are using opengrads, there are functions designed for computing
vertical advection, see

    ADVECTION FUNCTIONS<http://opengrads.org/doc/udxt/libbjt/libbjt.html#advection_functions>


  Arlindo


-- 
Arlindo da Silva
*dasilva at alum.mit.edu*
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Message: 2
Date: Mon, 7 May 2012 21:51:49 -0700 (PDT)
From: Ashok Priyadarshan Dimri <apdimri at yahoo.com>
Subject: Re: [gradsusr] gradsusr Digest, Vol 27, Issue 8
To: "gradsusr at gradsusr.org" <gradsusr at gradsusr.org>
Message-ID:
    <1336452709.97938.YahooMailNeo at web160205.mail.bf1.yahoo.com>
Content-Type: text/plain; charset="iso-8859-1"

I too am struggling to compute rotational and diverget wind with 'mvadv' and 'cdiff'. It is not warking 

Can someone help.
Sincerly
Dimri



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From: "gradsusr-request at gradsusr.org" <gradsusr-request at gradsusr.org>
To: gradsusr at gradsusr.org 
Sent: Tuesday, May 8, 2012 9:21 AM
Subject: gradsusr Digest, Vol 27, Issue 8

Send gradsusr mailing list submissions to
??? gradsusr at gradsusr.org

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When replying, please edit your Subject line so it is more specific
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Today's Topics:

?  1. Re: Grads vertical derivative error with cdiff (Aishwarya)
?  2. Enabling features listed from 'q config' (Sam Wilson)
?  3. Re: Enabling features listed from 'q config' (Jennifer Adams)
?  4. Re: Enabling features listed from 'q config' (Sam Wilson)


----------------------------------------------------------------------

Message: 1
Date: Mon, 7 May 2012 12:00:40 -0700
From: Aishwarya <spaceaish at gmail.com>
Subject: Re: [gradsusr] Grads vertical derivative error with cdiff
To: GrADS Users Forum <gradsusr at gradsusr.org>
Message-ID:
??? <CA+VQ+igjbBtFRMHV=x24aUC3rFEu1o0aAZsu_e=-r1k99SQK6w at mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

I dont think so. It is a WRF generated output.

On Mon, May 7, 2012 at 11:57 AM, Thomas Robinson <ter at hawaii.edu> wrote:

> Aloha,
>
> does your geopotential equal gz?
>
> d(geopot)/dz=d(gz)/dz=gdz/dz=g
>
> This is a constant and would yield a straight line with the value of g.
>
> On Mon, May 7, 2012 at 4:49 AM, Aishwarya <spaceaish at gmail.com> wrote:
>
>> Thank you. BUt if i set one specific level (say 500mb) and perform finite
>> diference, i find a straight line!
>>
>> On Sun, May 6, 2012 at 6:44 PM, Jeff Duda <jeffduda319 at gmail.com> wrote:
>>
>>> You can't use cdiff in the vertical.? You must calculate the derivative
>>> using a manual centered difference.? For example, 'd
>>> 0.5*(geopot(z+1)-geopot(z-1))'
>>>
>>> Jeff Duda
>>>
>>> On Sun, May 6, 2012 at 7:32 PM, Aishwarya <spaceaish at gmail.com> wrote:
>>>
>>>> Hi,
>>>>
>>>> I'm trying to find vertical derivative of geopotential (geopt). I tried
>>>> d cdiff(geopt,z), i find the error :
>>>> Error from CDIFF:? Specified dimension non varying
>>>> Operation Error:? Error from cdiff function
>>>>?  Error ocurred at column 1
>>>> DISPLAY error:? Invalid expression
>>>>?  Expression = cdiff(u,z)
>>>>
>>>> Any help would be great!
>>>>
>>>> Thank you,
>>>> -------
>>>> *Aishwarya,
>>>> Graduate Research Assistant,
>>>> Atmospheric Sciences,
>>>> University of Arizona,Tucson.*
>>>>
>>>>
>>>> _______________________________________________
>>>> gradsusr mailing list
>>>> gradsusr at gradsusr.org
>>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>>
>>>>
>>>
>>>
>>> --
>>> Jeff Duda
>>> Graduate research assistant
>>> University of Oklahoma School of Meteorology
>>> Center for Analysis and Prediction of Storms
>>>
>>>
>>> _______________________________________________
>>> gradsusr mailing list
>>> gradsusr at gradsusr.org
>>> http://gradsusr.org/mailman/listinfo/gradsusr
>>>
>>>
>>
>>
>> --
>> *Aishwarya,
>> Graduate Research Assistant,
>> Atmospheric Sciences,
>> University of Arizona,Tucson.*
>>
>>
>> _______________________________________________
>> gradsusr mailing list
>> gradsusr at gradsusr.org
>> http://gradsusr.org/mailman/listinfo/gradsusr
>>
>>
>
>
> --
> Tom Robinson
> President Graduate Student Organization
> Student Caucus Representative for the Graduate Student Organization
> Graduate Student - Department of Meteorology
> 732-718-2323
>
>
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr
>
>


-- 
*Aishwarya,
Graduate Research Assistant,
Atmospheric Sciences,
University of Arizona,Tucson.*
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Message: 2
Date: Mon, 7 May 2012 23:31:09 +0000
From: Sam Wilson <sam at surfline.com>
Subject: [gradsusr] Enabling features listed from 'q config'
To: "gradsusr at gradsusr.org" <gradsusr at gradsusr.org>
Message-ID: <CBCDA94B.10AB0%sam at surfline.com>
Content-Type: text/plain; charset="us-ascii"

Hi all,

I am looking to enable several features (shapefiles, netcdf, hdf) that are currently disabled in GrADS on the machine I'm working on.? I've seen previous posts in the archives in regards to enabling the printim command.? John Huddleston replied and mentioned a document BuildingGrADS.pdf.? Would someone mind sending me this document, or any other assistance in this matter?? I'm not sure if I need to do a full re-install, or if there are shortcuts to enable these features.? Here is the output of 'q config':

ga-> q config
Config: v2.0.a8 little-endian readline printim
Grid Analysis and Display System (GrADS) Version 2.0.a8
Copyright (c) 1988-2010 by Brian Doty and the
Institute for Global Environment and Society (IGES)
This program is distributed WITHOUT ANY WARRANTY
See file COPYRIGHT for more information.

Built Wed Jul 13 12:58:11 PDT 2011 for i686-pc-linux-gnu

This version of GrADS has been configured with the following options:
? o Built on a LITTLE ENDIAN machine
? o Athena Widget GUI DISABLED
? o Command line editing ENABLED
? ? ? http://tiswww.case.edu/php/chet/readline/rltop.html
? o printim command for image output ENABLED
? ? ? http://www.zlib.net<http://www.zlib.net/>
? ? ? http://www.libpng.org/pub/png/libpng.html
? ? ? http://www.libgd.org/Main_Page
? o GRIB2 interface DISABLED
? o NetCDF interface DISABLED
? o OPeNDAP gridded data interface DISABLED
? o OPeNDAP station data interface DISABLED
? o HDF interface DISABLED
? o GeoTIFF and KML output DISABLED
? o Shapefile interface DISABLED

For additional information please consult http://iges.org/grads

Thanks for your time and any help you can provide.

Best Regards,
Sam

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Message: 3
Date: Mon, 7 May 2012 20:07:54 -0400
From: Jennifer Adams <jma at cola.iges.org>
Subject: Re: [gradsusr] Enabling features listed from 'q config'
To: GrADS Users Forum <gradsusr at gradsusr.org>
Message-ID: <888F9B39-021A-46D5-8425-549E9E39FD22 at cola.iges.org>
Content-Type: text/plain; charset="us-ascii"

Why not try installing the pre-compiled, fully-enabled i686 build of version 2.0.1 available from iges.org/grads/downloads.html ?
--Jennifer


On May 7, 2012, at 7:31 PM, Sam Wilson wrote:

> Hi all,
> 
> I am looking to enable several features (shapefiles, netcdf, hdf) that are currently disabled in GrADS on the machine I'm working on.? I've seen previous posts in the archives in regards to enabling the printim command.? John Huddleston replied and mentioned a document BuildingGrADS.pdf.? Would someone mind sending me this document, or any other assistance in this matter?? I'm not sure if I need to do a full re-install, or if there are shortcuts to enable these features.? Here is the output of 'q config':
> 
> ga-> q config
> Config: v2.0.a8 little-endian readline printim
> Grid Analysis and Display System (GrADS) Version 2.0.a8
> Copyright (c) 1988-2010 by Brian Doty and the
> Institute for Global Environment and Society (IGES) 
> This program is distributed WITHOUT ANY WARRANTY 
> See file COPYRIGHT for more information. 
> 
> Built Wed Jul 13 12:58:11 PDT 2011 for i686-pc-linux-gnu
> 
> This version of GrADS has been configured with the following options:
>?  o Built on a LITTLE ENDIAN machine
>?  o Athena Widget GUI DISABLED
>?  o Command line editing ENABLED 
>? ? ? http://tiswww.case.edu/php/chet/readline/rltop.html 
>?  o printim command for image output ENABLED 
>? ? ? http://www.zlib.net 
>? ? ? http://www.libpng.org/pub/png/libpng.html 
>? ? ? http://www.libgd.org/Main_Page 
>?  o GRIB2 interface DISABLED
>?  o NetCDF interface DISABLED
>?  o OPeNDAP gridded data interface DISABLED
>?  o OPeNDAP station data interface DISABLED
>?  o HDF interface DISABLED
>?  o GeoTIFF and KML output DISABLED
>?  o Shapefile interface DISABLED
> 
> For additional information please consult http://iges.org/grads
> 
> Thanks for your time and any help you can provide.
> 
> Best Regards,
> Sam
> 
> _______________________________________________
> gradsusr mailing list
> gradsusr at gradsusr.org
> http://gradsusr.org/mailman/listinfo/gradsusr

--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org



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Message: 4
Date: Tue, 8 May 2012 00:21:52 +0000
From: Sam Wilson <sam at surfline.com>
Subject: Re: [gradsusr] Enabling features listed from 'q config'
To: GrADS Users Forum <gradsusr at gradsusr.org>
Message-ID: <CBCDB4E0.10ABC%sam at surfline.com>
Content-Type: text/plain; charset="windows-1252"

Thanks Jennifer ? I'll give it a shot.

Sam


From: Jennifer Adams <jma at cola.iges.org<mailto:jma at cola.iges.org>>
Reply-To: GrADS Users Forum <gradsusr at gradsusr.org<mailto:gradsusr at gradsusr.org>>
Date: Mon, 7 May 2012 20:07:54 -0400
To: GrADS Users Forum <gradsusr at gradsusr.org<mailto:gradsusr at gradsusr.org>>
Subject: Re: [gradsusr] Enabling features listed from 'q config'

Why not try installing the pre-compiled, fully-enabled i686 build of version 2.0.1 available from iges.org/grads/downloads.html<http://iges.org/grads/downloads.html> ?
--Jennifer


On May 7, 2012, at 7:31 PM, Sam Wilson wrote:

Hi all,

I am looking to enable several features (shapefiles, netcdf, hdf) that are currently disabled in GrADS on the machine I'm working on.? I've seen previous posts in the archives in regards to enabling the printim command.? John Huddleston replied and mentioned a document BuildingGrADS.pdf.? Would someone mind sending me this document, or any other assistance in this matter?? I'm not sure if I need to do a full re-install, or if there are shortcuts to enable these features.? Here is the output of 'q config':

ga-> q config
Config: v2.0.a8 little-endian readline printim
Grid Analysis and Display System (GrADS) Version 2.0.a8
Copyright (c) 1988-2010 by Brian Doty and the
Institute for Global Environment and Society (IGES)
This program is distributed WITHOUT ANY WARRANTY
See file COPYRIGHT for more information.

Built Wed Jul 13 12:58:11 PDT 2011 for i686-pc-linux-gnu

This version of GrADS has been configured with the following options:
? o Built on a LITTLE ENDIAN machine
? o Athena Widget GUI DISABLED
? o Command line editing ENABLED
? ? ? http://tiswww.case.edu/php/chet/readline/rltop.html
? o printim command for image output ENABLED
? ? ? http://www.zlib.net<http://www.zlib.net/>
? ? ? http://www.libpng.org/pub/png/libpng.html
? ? ? http://www.libgd.org/Main_Page
? o GRIB2 interface DISABLED
? o NetCDF interface DISABLED
? o OPeNDAP gridded data interface DISABLED
? o OPeNDAP station data interface DISABLED
? o HDF interface DISABLED
? o GeoTIFF and KML output DISABLED
? o Shapefile interface DISABLED

For additional information please consult http://iges.org/grads

Thanks for your time and any help you can provide.

Best Regards,
Sam

_______________________________________________
gradsusr mailing list
gradsusr at gradsusr.org<mailto:gradsusr at gradsusr.org>
http://gradsusr.org/mailman/listinfo/gradsusr

--
Jennifer M. Adams
IGES/COLA
4041 Powder Mill Road, Suite 302
Calverton, MD 20705
jma at cola.iges.org<mailto:jma at cola.iges.org>



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